Multiple-gang harrow



Jan. 30, 1923.

E M. HEYLMANy MULTIPLE GANG HARRow.

4 SHEETS-SHEET 1 Fl i-:D Nov. 13, 1919.

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NVENTAOR WMIMMQM Jan. 30, w23. l 1,443,364

E. M. HEYLMAN.

MULTIPLE GANG HARRow. FILED Nov'. 13. 1919. 4 SHEETS-SHEET 4 NVENTOR Patented Jan. 30, 1923.

UNITEDI STATES PATENT OFFICE.

EDWARD M. HEYIMAN,'OF SOUTH BEND, INDIANA, .SSIGNOR T0 OLIVER CHILLED y:PLOW WORKS, OF SOUTH BEND, INDIANA.

MULTIPLE-GANG HARROW.

v Application led November 1I?, 1919. Serial No. 337,823.

exa-ct description ofthe invention, such as.

will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements .in harrows and more particularly to dis'k harrows of the multiple-gang type in which two-disk-gangs are arranged in tandem relation to two other disk-gangs,one object of the invention being to so connect together two frames with which the front and rear gangs are respectively connected, that the rear gangs will be permitted to swing clear of the front gangs on making a turn and so that a short turn may be accomplished.

A further object is to provide a structure of the type specified inwhich the rear gangs may be set at an angle to the front gangs and comparatively close to the latter,.and still permit the turning of the harrow without confiict of the front and rear gangs.

A further object is to construct the har-J necessary to pull the rear gangs operates to force the disks of the front gangs into the ground.

A further object is to construct the harrow in such manner that when operated on a .hillside where the tendency of the harrow is to drift down hill, the gang on the up-hill side may be caused to assumea greater angle than the angle assumed by the gang on the down-hill side, thus causing the rear gangs to correctly track with the front gangs on the hill-side.

A further object is to provide simple and eHicient means for angling and for. adjusting the angularity of the'gangs.

With these and other objects in view, the

\the claims.

In the accompanying drawings, Figure 1- is a plan view of a harrow 'showing an embodiment of my invention. Fig. 2 is a side elevation. Fig. 3 is a plan View showing the positions which the partsmay assume when the harrow makes a turn. Figs. 4 to 1() inclusive are detail views.

1, 2 represent two frames, a` portion of the rear frame overlying a portion of the front frame and pivotally connected with said front frame rearwardly of the forward end and forwardly of the latter and preferably in a plane somewhat above that of said front frame, and with each of said frames, disk gangs are connected, as hereinafter described.

The front frame 1 has a general triangular shape, comprising side beams 3, 8 which converge at their forward ends and their rear spread portions are' connected by a transverse brace 4 secured to said side beams through the medium of brackets' 5. Centrally located, parallel beams 6, 6 extend from the convergent forward ends of thel s i-de beams to the transverse brace 4,--the forward ends of said parallel beams.

being secured to the forward ends of the side beams by bolts 7- and their rear ends resting on the transverse brace. A bracket 8 is secured to the central portion of the transverse brace and provided with a part 9 entering between the parallel beams 6 and secured thereto.

In addition to connecting the forward ends of the beams 3 and 6, the bolts 7 also serve to connect the'lower ends of standards 10 with the `forward end of the frame 1 and braces 11 extend forwardly from these standards to the parallel beams 6. The rear ends ofv themembers of a yoke or drawbar 12 (whereby the barrow may be connected with a tractor) are loosely mounted on the bolts 7 and braces 13 are secured at their upper ends to the standards 10, the lower forward ends of these braces being adjustably connected with the yoke or drawbar. To effect such adjustable connection of the braces 13 with the yoke or drawbar the members of the latter may each be provided with a pluralityy of holes 14, to

-and the tractor.

i -Jit may be adjusted vertically to insure a proper 'draft connection between the harrow The rear 'front 2 is triangular in shape and comprises a rear beam and s1de beams Y 16 extending forwardly from the ends 'of said lrear beam and terminating at their forward ends over an intermediate portion of the frame 1. A central beam 17 is connected at its rear end with the rear frame beam 15 and p-asses, at its :forward endi,

f -16 and forms a tongue 18 which is .20.'

between theVc-onvergent forwar ends o the lside beams 16, to 'which later, sald central-beam is secured. The central beam 17 projects forwardly and downwardly from the forward end of the frame beams plv- 'otallyconnected, by a bolt 19, with the ytop 4of, a bracket 20 secured to and projecting upwardly from the parallel beams 6.0i the fronty fra-me 1. Braces-21 extend from an intermediate rtion of the center beam 17 of the rear rame to thefconverglng slde beains 1.6 of the latter. Disk gangs 22, 22 are loosely connected 4with the rear (portions of .the front frame beams 3, 3, an disk-gangs 23', 23 arepiv- A otally connected with therear corners ofthe rear frame 2, and mechanism is provided,

' as hereinafter explained,- for adjusting the angles of the respective gangs of each pair and for adjustin the angles of the gangs of one pair .relatively to the angles of the other pair.

Each disk-gangA comprises a frame fincludingwa top beam 24, an axle 25 on which the disks 26 of the gang are mounted, and

two standards 27 and 28. Scrapers 29 for the disks are secured to the to-p beam of each gang frame.

. The standards 27 of the respective gangframes are made near theirlower ends with openings 30 into which the rear ends of or keys 31 prevent displacement o the gang frames relatively to said frame bars. A link 32. isvloosely connected with the upper prtion of the standard 27 of each front gang frame,4 and the other end of eac-h link is loosely connected with the adjacent frame bar 3, through the medium of the bracket 5 secured thereto. Thus it will be seen that each front gang 22 is loosely and pivotally connected at one side of its center with the rear portion of the front frame 1.

In effecting pivotal connection of the rear gangs 23 with therear franie 2, a bracket 33 beam, and each bracket 33 is'connected wit 1s secured upon the top beam 24 'of each rear gang-frame near the outer end of said top a rear corner of the frame 2 by a pintle 34. A diagonal-supporting brace 35 is attached at one end to each frame beam 16 and pins Y of the ,rear frame. and at the other end, these braces are loosely connected with the lowery portions of the standards 27 of the rear gang-frames approximately in line gang ' and the saidinclined bars are connecte by links 39'with the upper portions of said rear gang-frame standards 28. Vertical bars 40y are connected at their lower ends with the inclined bars 38 and the upper portions of these vertical standards are movably connected with the slide bar 37 by means of pin-and-slot connections as indicated at 41. Thus it willfbeL` observed that the rear gangs are connected with the frame 2, not only through the medium of the pivotal connections with the rear corners of the latter, but also by braces 35 and the bars 37, 38 and 40, said bars being connected with those end portions of the gang-frames `farthest removed from the pivotal connections of gang-frames with the rear frame 2.

Levers 42 are pivotally connected, between their ends, to respective side/s of the bracketl 20 on the front frame 1, and to :the lower arms of these levers, the forward ends of bars or pitmen 43 are pivotally connected, the rear ends of the Alatter being loosely connected with the standard 28 near the inner ends of the frames of the front gangs 22, and links 43a connect the u per portions ofA said standards with the Ears 43. 'In orderto limit the. upward movement of the rods or p-itmen 43, stops 44 are adjustably secured to the bracket 8 at the rear ends of thel parallel bars 6 of the front frameI 1.

Interiorly threaded sleeves 45 are pivotally connected with the upper ends of the inclined bars 38 and throu h these sleeves, the threaded portions -46 o rods or pitmen A47 pass, the forward ends of the latter being loosely connected with the upper arms of the levers-42.

It is evident that if the levers 42 be turned on their pivotal connections with the bracket 20, motion will be transmitted through the rods or pitmen 43 and 47 to the inner portions of the front and rear gangs and operate to shift said simultaneous angular adjustments of the a short turn can be made.

front and rear gangs, the devices now to be described are employed.

An interiorly threaded sleeve 48 is located between the upper endsof the levers 42 and is provided with trunnions 49 mounted in said levers. A sleeve 50 is located between the upper ends of the standards 10 at the lforward end of the frame 1 and provided with trunnions 51 mounted in said Stande ards. A. manually operable shaft 52 (preferably having a crank handle 53 at its forL ward end) passes freelythrough the sleeve.4

50 and is prevented from longitudinall movement relatively thereto, by pins 54 and collars 55 may be disposed on the shaft between said pins and the ends of the sleeve 50. The shaft 52 is made with a threaded portion which passes through the interiorly threaded sleeve 48 at the upperend of the levers 42,-`thus effecting a screw-connection between said levers and shaft. It is evident that by turning the screw shaft 52, the

levers 42 will be moved and t-he angular ad- .f

justments of the several disk gangs will be effected as previously explained. The threaded portion of the adjusting screwshaft 52 is enclosed by tubes 56-57 screwed into respective ends of the sleeve 48. The forward end of the tube 56 is provided with a collar 58 through which the plain portion `of the shaft 52passes and this ring may carry a packing ring 59. The rear endof the tube 57 is closed by a cap 60. The tubes 56-57 serve to protect the threaded portion of the screw shaft from dust and also serve to contain lubricant.

The location of the pivotal connection of the rear framel 2 with the front frame is an important feature of my invention and, with the cooperation of other features, results in marked advantages in the operation of the harrow. By pivotally connecting the forward end of they rear frame with the front frame forwardly of the rearpend and rearwardly of the hitch means at the forward end thereof, the front and rear gangs are located comparatively close to each other and still the rear gangs are permitted to swing clear of the front gangs when the harrow is making a turn and furthermore,

outside rear gang will be caused by the connections hereinbefore described to take a greater angle than the inside rear gang as indicated in Figure 3 and hence has a tendency to force the rear gangs and rear frame back to alignment with theV front gangs, as' the barrow completes a turn.

In using the harrow on a hill-side, the natural tendency is for the harrow to drift down the hill, but by reason of the location of the connection of the front of the. rear frame relatively to the front frame as prev'Lously stated, and the pivotal connections In turning, thel of .the connectingA bars by which the angularadjustments of the gangs are effected, rela- 1 alignment.

twill be observed that the pivot of the rear' frame to the front frame is above the \plane of the hitch to the tractor, and hence the power necessary to pull the rear frame and gangs operates to force-the'disks of the front gangs into the ground. As the'front gangs loosen up the earth, the rear gangs' will readily conform in depthof penetration to that o f the front angs. e

The frontend of the front frame, the point of hitch, will not rise, because the weight of the tractor will hold it down.

arious changes might be made in the details of construction of my invention without departing from the; spirit thereof or limiting its scope, andhencel I do not wish to restrict myself to-the precise details herein set forth. Having fully described my invention what I claim as new and desire to secure by Letters-Patent, is: v

l. In a mult-iple gang harrow, the combination with front and rear frames pivotally connected together in line with the longitudinal axis of the front frame, and

two earth working gangs pivotally connected with each frameof upright angling levers' vertical and transverse. pivotal connections with said angling levers, and means operable normally to hold said4 levers against movement.

2. The combination with front and rear frames, `the' rear frame overlying the front frame and pivotally connected with the latter rearwardly of the forward end of the same, of two disk gang frames pivotally connected with the front frame, two disk gang-frames pivotally connected with the rear frame, levers pivotally mounted be-4 tween their ends on the front frame, and 'connections between said levers, re# spectivelyV above and between their fulcrums and the disk gang frames at the ends of the 'rear and front frames respectively.

3. The combination of two frames disposed in tandem relationto each other, the

rear frame' being'connected with the front.

frame between the ends of the latter, earth working gangs pivotally connectedwith the j respective frames, standards secured to the forward end of the front frame, a yoke constituting a kdraw-bar pivotally connected with said front frame, and braces connecting said standards and draw-bar, the connection of the braces to one of'said parts being adjustable. "i

4. In a multiple-gang harrow, the combination with front and rear frames, and earth.

working gangs pivotallyI connectedwith each frame, of standards located near the forward end of the front frame, levers pivotally connected between their ends with an intermedi-- ate part of the front frame, connections between the'lower arms of said levers and the front gangs, connectionsxbetween the' upper 4arms of said levers -and the rear gangs, a sleeve pivoted between sald standards, an

nation with. framework, and two pairs Vof pivoted earth working gangs, one'pair disposed in front ofthe other,of a lever pivoted between its ends,l connections between the lower arms of said lever and the front gangs, connections between the upper arm `of said lever and the rear gangs, a manually operf able screw shaft,'a mounting for .the latter, and a threaded connection between said screw shaft and the upper arm of said lever.

6. In a multiple-gang harrow, the combination with front and rear frames connected together, and earth working gangs pivotally connected with `the respective frames, of levers pivotally connected between their ends with the front frame, connections between the lower armsof said levers and the front g'angs, slide bars mounted on the rear frame, connecting bars between slide bars and the rear gangs, and rods connected with the upper arms of said levers and having threaded connection with'said connecting bars.

7. In a multiple-gang harrow, the combination with front and rear frames connected together, and earthworking gangs pivotally connected with the respective frames, levers pivotall7 connectedbetween'their ends with the front frame, connections between the lower arms of said levers and the front gangs, slide bars mounted on the rearframe, inclined bars connecting said slide bars with the rear gangs, vertical 'bars connected with said incllned bars and movably connected with the slide bars, and rods adjustably connected with said inclined barsand connect- 1 ed with said levers.

8; In a Amultiple-gang harrow, the combi--1 nation with front and-rear frames, of earth working gangs pivotally'f connected with the front frame, earth-working gangs each pivotally connected near one end with the rear fra-me, braces connecting the pivoted ends of Y said rear gangs with the rear frame, slide bars mounted on said rear frames, inclined bars connecting sald slide bars wlth the 'rear gangs, links connecting said vinclined bars with the rear, gangs, vertical bars connected near their lower ends with the inclined bars' and movably'connected near their upper ends' nation with connected front and rear frames, v

and front and rear earth-working gangs ,pivotally connected with'the respective frames, of standards on the front frame, levers pivotally connected between their ends with the front frame, connections between said levers, respectively above and below their fulcrums, and the rear and front earth-working gangs lrespectively., an interiorly threaded sleeve pivoted to said levers, aI manually operable shaft, a mounting for said shaft carried by said standards, said shaft having a thread portion passing through said interiorly threaded sleeve, and tubes secured to said last-mentioned sleeve and enclosing the lthreaded portion of said shaft.

In testimony whereof, I have signed this I specification in the presence of two subscribing witnesses. l

` EDWARD M. HEYLMAN.

Witnesses:

EDWIN NICAR, GEORGE R. LANPHERE. 

